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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-03-25 11:41:20 -0400
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-03-25 11:41:20 -0400
commit7bf7e370d5919112c223a269462cd0b546903829 (patch)
tree03ccc715239df14ae168277dbccc9d9cf4d8a2c8 /arch/arm/mm/proc-v7.S
parent68b1a1e786f29c900fa1c516a402e24f0ece622a (diff)
parentd39dd11c3e6a7af5c20bfac40594db36cf270f42 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus-1
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6: (9356 commits) [media] rc: update for bitop name changes fs: simplify iget & friends fs: pull inode->i_lock up out of writeback_single_inode fs: rename inode_lock to inode_hash_lock fs: move i_wb_list out from under inode_lock fs: move i_sb_list out from under inode_lock fs: remove inode_lock from iput_final and prune_icache fs: Lock the inode LRU list separately fs: factor inode disposal fs: protect inode->i_state with inode->i_lock lib, arch: add filter argument to show_mem and fix private implementations SLUB: Write to per cpu data when allocating it slub: Fix debugobjects with lockless fastpath autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd() autofs4 - remove autofs4_lock autofs4 - fix d_manage() return on rcu-walk autofs4 - fix autofs4_expire_indirect() traversal autofs4 - fix dentry leak in autofs4_expire_direct() autofs4 - reinstate last used update on access vfs - check non-mountpoint dentry might block in __follow_mount_rcu() ... NOTE! This merge commit was created to fix compilation error. The block tree was merged upstream and removed the 'elv_queue_empty()' function which the new 'mtdswap' driver is using. So a simple merge of the mtd tree with upstream does not compile. And the mtd tree has already be published, so re-basing it is not an option. To fix this unfortunate situation, I had to merge upstream into the mtd-2.6.git tree without committing, put the fixup patch on top of this, and then commit this. The result is that we do not have commits which do not compile. In other words, this merge commit "merges" 3 things: the MTD tree, the upstream tree, and the fixup patch.
Diffstat (limited to 'arch/arm/mm/proc-v7.S')
-rw-r--r--arch/arm/mm/proc-v7.S128
1 files changed, 98 insertions, 30 deletions
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 0c1172b56b4e..262fa88a7439 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -108,10 +108,16 @@ ENTRY(cpu_v7_switch_mm)
108#ifdef CONFIG_ARM_ERRATA_430973 108#ifdef CONFIG_ARM_ERRATA_430973
109 mcr p15, 0, r2, c7, c5, 6 @ flush BTAC/BTB 109 mcr p15, 0, r2, c7, c5, 6 @ flush BTAC/BTB
110#endif 110#endif
111#ifdef CONFIG_ARM_ERRATA_754322
112 dsb
113#endif
111 mcr p15, 0, r2, c13, c0, 1 @ set reserved context ID 114 mcr p15, 0, r2, c13, c0, 1 @ set reserved context ID
112 isb 115 isb
1131: mcr p15, 0, r0, c2, c0, 0 @ set TTB 0 1161: mcr p15, 0, r0, c2, c0, 0 @ set TTB 0
114 isb 117 isb
118#ifdef CONFIG_ARM_ERRATA_754322
119 dsb
120#endif
115 mcr p15, 0, r1, c13, c0, 1 @ set context ID 121 mcr p15, 0, r1, c13, c0, 1 @ set context ID
116 isb 122 isb
117#endif 123#endif
@@ -171,6 +177,87 @@ cpu_v7_name:
171 .ascii "ARMv7 Processor" 177 .ascii "ARMv7 Processor"
172 .align 178 .align
173 179
180 /*
181 * Memory region attributes with SCTLR.TRE=1
182 *
183 * n = TEX[0],C,B
184 * TR = PRRR[2n+1:2n] - memory type
185 * IR = NMRR[2n+1:2n] - inner cacheable property
186 * OR = NMRR[2n+17:2n+16] - outer cacheable property
187 *
188 * n TR IR OR
189 * UNCACHED 000 00
190 * BUFFERABLE 001 10 00 00
191 * WRITETHROUGH 010 10 10 10
192 * WRITEBACK 011 10 11 11
193 * reserved 110
194 * WRITEALLOC 111 10 01 01
195 * DEV_SHARED 100 01
196 * DEV_NONSHARED 100 01
197 * DEV_WC 001 10
198 * DEV_CACHED 011 10
199 *
200 * Other attributes:
201 *
202 * DS0 = PRRR[16] = 0 - device shareable property
203 * DS1 = PRRR[17] = 1 - device shareable property
204 * NS0 = PRRR[18] = 0 - normal shareable property
205 * NS1 = PRRR[19] = 1 - normal shareable property
206 * NOS = PRRR[24+n] = 1 - not outer shareable
207 */
208.equ PRRR, 0xff0a81a8
209.equ NMRR, 0x40e040e0
210
211/* Suspend/resume support: derived from arch/arm/mach-s5pv210/sleep.S */
212.globl cpu_v7_suspend_size
213.equ cpu_v7_suspend_size, 4 * 8
214#ifdef CONFIG_PM
215ENTRY(cpu_v7_do_suspend)
216 stmfd sp!, {r4 - r11, lr}
217 mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID
218 mrc p15, 0, r5, c13, c0, 1 @ Context ID
219 mrc p15, 0, r6, c3, c0, 0 @ Domain ID
220 mrc p15, 0, r7, c2, c0, 0 @ TTB 0
221 mrc p15, 0, r8, c2, c0, 1 @ TTB 1
222 mrc p15, 0, r9, c1, c0, 0 @ Control register
223 mrc p15, 0, r10, c1, c0, 1 @ Auxiliary control register
224 mrc p15, 0, r11, c1, c0, 2 @ Co-processor access control
225 stmia r0, {r4 - r11}
226 ldmfd sp!, {r4 - r11, pc}
227ENDPROC(cpu_v7_do_suspend)
228
229ENTRY(cpu_v7_do_resume)
230 mov ip, #0
231 mcr p15, 0, ip, c8, c7, 0 @ invalidate TLBs
232 mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
233 ldmia r0, {r4 - r11}
234 mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID
235 mcr p15, 0, r5, c13, c0, 1 @ Context ID
236 mcr p15, 0, r6, c3, c0, 0 @ Domain ID
237 mcr p15, 0, r7, c2, c0, 0 @ TTB 0
238 mcr p15, 0, r8, c2, c0, 1 @ TTB 1
239 mcr p15, 0, ip, c2, c0, 2 @ TTB control register
240 mcr p15, 0, r10, c1, c0, 1 @ Auxillary control register
241 mcr p15, 0, r11, c1, c0, 2 @ Co-processor access control
242 ldr r4, =PRRR @ PRRR
243 ldr r5, =NMRR @ NMRR
244 mcr p15, 0, r4, c10, c2, 0 @ write PRRR
245 mcr p15, 0, r5, c10, c2, 1 @ write NMRR
246 isb
247 mov r0, r9 @ control register
248 mov r2, r7, lsr #14 @ get TTB0 base
249 mov r2, r2, lsl #14
250 ldr r3, cpu_resume_l1_flags
251 b cpu_resume_mmu
252ENDPROC(cpu_v7_do_resume)
253cpu_resume_l1_flags:
254 ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_FLAGS_SMP)
255 ALT_UP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_FLAGS_UP)
256#else
257#define cpu_v7_do_suspend 0
258#define cpu_v7_do_resume 0
259#endif
260
174 __CPUINIT 261 __CPUINIT
175 262
176/* 263/*
@@ -264,6 +351,12 @@ __v7_setup:
264 orreq r10, r10, #1 << 6 @ set bit #6 351 orreq r10, r10, #1 << 6 @ set bit #6
265 mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register 352 mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register
266#endif 353#endif
354#ifdef CONFIG_ARM_ERRATA_751472
355 cmp r6, #0x30 @ present prior to r3p0
356 mrclt p15, 0, r10, c15, c0, 1 @ read diagnostic register
357 orrlt r10, r10, #1 << 11 @ set bit #11
358 mcrlt p15, 0, r10, c15, c0, 1 @ write diagnostic register
359#endif
267 360
2683: mov r10, #0 3613: mov r10, #0
269#ifdef HARVARD_CACHE 362#ifdef HARVARD_CACHE
@@ -276,36 +369,8 @@ __v7_setup:
276 ALT_SMP(orr r4, r4, #TTB_FLAGS_SMP) 369 ALT_SMP(orr r4, r4, #TTB_FLAGS_SMP)
277 ALT_UP(orr r4, r4, #TTB_FLAGS_UP) 370 ALT_UP(orr r4, r4, #TTB_FLAGS_UP)
278 mcr p15, 0, r4, c2, c0, 1 @ load TTB1 371 mcr p15, 0, r4, c2, c0, 1 @ load TTB1
279 /* 372 ldr r5, =PRRR @ PRRR
280 * Memory region attributes with SCTLR.TRE=1 373 ldr r6, =NMRR @ NMRR
281 *
282 * n = TEX[0],C,B
283 * TR = PRRR[2n+1:2n] - memory type
284 * IR = NMRR[2n+1:2n] - inner cacheable property
285 * OR = NMRR[2n+17:2n+16] - outer cacheable property
286 *
287 * n TR IR OR
288 * UNCACHED 000 00
289 * BUFFERABLE 001 10 00 00
290 * WRITETHROUGH 010 10 10 10
291 * WRITEBACK 011 10 11 11
292 * reserved 110
293 * WRITEALLOC 111 10 01 01
294 * DEV_SHARED 100 01
295 * DEV_NONSHARED 100 01
296 * DEV_WC 001 10
297 * DEV_CACHED 011 10
298 *
299 * Other attributes:
300 *
301 * DS0 = PRRR[16] = 0 - device shareable property
302 * DS1 = PRRR[17] = 1 - device shareable property
303 * NS0 = PRRR[18] = 0 - normal shareable property
304 * NS1 = PRRR[19] = 1 - normal shareable property
305 * NOS = PRRR[24+n] = 1 - not outer shareable
306 */
307 ldr r5, =0xff0a81a8 @ PRRR
308 ldr r6, =0x40e040e0 @ NMRR
309 mcr p15, 0, r5, c10, c2, 0 @ write PRRR 374 mcr p15, 0, r5, c10, c2, 0 @ write PRRR
310 mcr p15, 0, r6, c10, c2, 1 @ write NMRR 375 mcr p15, 0, r6, c10, c2, 1 @ write NMRR
311#endif 376#endif
@@ -351,6 +416,9 @@ ENTRY(v7_processor_functions)
351 .word cpu_v7_dcache_clean_area 416 .word cpu_v7_dcache_clean_area
352 .word cpu_v7_switch_mm 417 .word cpu_v7_switch_mm
353 .word cpu_v7_set_pte_ext 418 .word cpu_v7_set_pte_ext
419 .word 0
420 .word 0
421 .word 0
354 .size v7_processor_functions, . - v7_processor_functions 422 .size v7_processor_functions, . - v7_processor_functions
355 423
356 .section ".rodata" 424 .section ".rodata"